C++ (Cpp) cond_unmask_irq Examples

Example #1

File: chip.c Project: Toradex-Apalis-TK1-AndroidTV/android_kernel_nvidia_mm

/**
 *	handle_level_irq - Level type irq handler
 *	@irq:	the interrupt number
 *	@desc:	the interrupt description structure for this irq
 *
 *	Level type interrupts are active as long as the hardware line has
 *	the active level. This may require to mask the interrupt and unmask
 *	it after the associated handler has acknowledged the device, so the
 *	interrupt line is back to inactive.
 */
void
handle_level_irq(unsigned int irq, struct irq_desc *desc)
{
	raw_spin_lock(&desc->lock);
	mask_ack_irq(desc);

	if (unlikely(irqd_irq_inprogress(&desc->irq_data)))
		if (!irq_check_poll(desc))
			goto out_unlock;

	desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING);
	kstat_incr_irqs_this_cpu(irq, desc);

	/*
	 * If its disabled or no action available
	 * keep it masked and get out of here
	 */
	if (unlikely(!desc->action || irqd_irq_disabled(&desc->irq_data))) {
		desc->istate |= IRQS_PENDING;
		goto out_unlock;
	}

	handle_irq_event(desc);

	cond_unmask_irq(desc);

out_unlock:
	raw_spin_unlock(&desc->lock);
}

Example #2

File: chip.c Project: AICP/kernel_moto_shamu

/**
 *	handle_fasteoi_irq - irq handler for transparent controllers
 *	@irq:	the interrupt number
 *	@desc:	the interrupt description structure for this irq
 *
 *	Only a single callback will be issued to the chip: an ->eoi()
 *	call when the interrupt has been serviced. This enables support
 *	for modern forms of interrupt handlers, which handle the flow
 *	details in hardware, transparently.
 */
bool
handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc)
{
	bool handled = false;

	raw_spin_lock(&desc->lock);

	if (unlikely(irqd_irq_inprogress(&desc->irq_data)))
		if (!irq_check_poll(desc))
			goto out;

	desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING);
	kstat_incr_irqs_this_cpu(irq, desc);

	/*
	 * If its disabled or no action available
	 * then mask it and get out of here:
	 */
	if (unlikely(!desc->action || irqd_irq_disabled(&desc->irq_data))) {
		if (!irq_settings_is_level(desc))
			desc->istate |= IRQS_PENDING;
		mask_irq(desc);
		goto out;
	}

	if (desc->istate & IRQS_ONESHOT)
		mask_irq(desc);

	preflow_handler(desc);
	handle_irq_event(desc);

	if (desc->istate & IRQS_ONESHOT)
		cond_unmask_irq(desc);

	handled = true;

out_eoi:
	desc->irq_data.chip->irq_eoi(&desc->irq_data);
out_unlock:
	raw_spin_unlock(&desc->lock);
	return handled;
out:
	if (!(desc->irq_data.chip->flags & IRQCHIP_EOI_IF_HANDLED))
		goto out_eoi;
	goto out_unlock;
}

Example #3

File: chip.c Project: MiniBlu/cm11_kernel_htc_msm8974a3ul

void
handle_level_irq(unsigned int irq, struct irq_desc *desc)
{
    raw_spin_lock(&desc->lock);
    mask_ack_irq(desc);

    if (unlikely(irqd_irq_inprogress(&desc->irq_data)))
        if (!irq_check_poll(desc))
            goto out_unlock;

    desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING);
    kstat_incr_irqs_this_cpu(irq, desc);

    if (unlikely(!desc->action || irqd_irq_disabled(&desc->irq_data)))
        goto out_unlock;

    handle_irq_event(desc);

    cond_unmask_irq(desc);

out_unlock:
    raw_spin_unlock(&desc->lock);
}